CHAPTER 2 PRACTICE TEST
A. Matching
Match each description in Column B to the correct term in Column A. Write the letter of the correct
description on the line.
Column A
Column B
_____
1.
Product
a. matter that flows but has a definite volume
_____
2.
Phase
b. amount of matter that an object contains
_____
3.
Physical change
c. starting substance in a chemical reaction
_____
4.
Liquid
d. homogenous mixture
_____
5.
Mass
e. the simplest form of matter with a unique set of properties
_____
6.
Element
f. a part of a sample with uniform composition and properties
_____
7.
Solid
g. alters a substance without changing its composition
_____
8.
Solution
h. matter with a definite shape and volume
_____
9.
Compound
i. substance formed in a chemical reaction
_____
10. Chemical reaction
j. matter that takes both the shape and volume of its container
_____
11. Substance
k. depends on the type of matter in a sample
_____
12. Gas
l. the quality or condition of a substance that can be observed
Or measured without changing the substance’s composition
_____
13. Intensive property
m. a physical blend of two or more components
_____
14. Physical property
n. the change of one or more substances into new substances
_____
15. Mixture
o. matter that has a uniform and definite composition
_____
16. Reactant
k. contains two or more elements chemically combined in a
fixed proportion.
B. Multiple Choice
Choose the best answer for each question and write its letter on the line.
_____
17. All of the following are general characteristics of a substance in the liquid state except
a. definite volume.
c. not easily compressed.
b. able to flow.
d. definite shape.
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CHAPTER 2 PRACTICE TEST
_____
18. In the chemical reaction iron plus oxygen → iron oxide,
a. iron oxide is a reactant.
c. oxygen is a product.
b. iron is a reactant.
d. iron is a product.
_____
19. Which term does not fit with the others listed?
a. solid
c. gas
b. reactant
d. liquid
_____
20. The chemical symbol for sodium is
a. NA
b. Na
c. SO
d. So
_____
21. A basketball has more mass than a golf ball because:
a. the basketball takes up more space.
b. the basketball contains more matter.
c. the golf ball contains a different kind of matter.
d. the golf ball has an indefinite composition.
_____
22. A gas is a form of matter that
a. has a definite volume.
b. is generally a liquid or solid at room temperature.
c. takes the shape and volume of its container.
d. is difficult to compress.
_____
23. Homogeneous mixtures
a. are always liquids.
b. consist of two or more phases.
c. have a composition that is fixed.
d. are known as solutions.
_____
24. A compound
a. is a substance.
b. has a composition that varies.
c. can be physically separated into its elements.
d. has properties similar to those of its elements.
_____
25. Physical properties of a substance include
a. color and odor.
c. malleability.
b. melting and boiling points.
d. all of the above.
_____
26. When iron and oxygen combine to form iron oxide,
a. a physical change occurs.
c. a change in mass occurs.
b. a change of state occurs.
d. a chemical change occurs.
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CHAPTER 2 PRACTICE TEST
_____
27. Another name for a homogeneous mixture is
a. solution.
c. element.
b. matter.
d. mass.
_____
28. The chemical symbol for iron is:
a. Ir
b. FE
c. Fe
d. I
_____
29. Which of the following is an example of an extensive property?
a. color
c. freezing point
b. hardness
d. mass
_____
30. Which of the following substances is not a solution.
a. saltwater
c. brass
b. trail mix
d. air
_____
31. Which of the following statements describes a solid?
a. It takes the shape of its container.
b. It takes the volume of its container.
c. Its particles are packed together tightly.
d. It is easily compressed.
_____
32. At room temperature, which of the following is typically in a physical state different
from that of the other three?
a. water
c. grape juice
b. milk
d. oxyen
_____
33. Which term does not fit with the others listed?
a. ice
c. salt
b. steam
d. water
_____
34. Which of the following is an example of a physical change?
a. toasting bread
c. digesting a banana
b. cooking a hamburger
d. melting butter
_____
35. An example of a heterogeneous mixture would be
a. sugar.
c. tap water.
b. salt water.
d. granite (a rock)
_____
36. Which of the following is a compound?
a. carbon
b. hydrogen
3
c. oxygen
d. water
CHAPTER 2 PRACTICE TEST
_____
37. Iron is an example of a(n)
a. element.
b. compound.
c. heterogeneous mixture.
d. homogeneous mixture.
_____
38. The element whose chemical symbol is C is
a. calcium.
c. copper.
b. carbon.
d. chlorine.
_____
39. Which of the following events can best distinguish a physical change from a
chemical change?
a. Energy is absorbed or released.
c. A gas is produced.
b. A different chemical composition.
d. Mass is conserved.
_____
40. Which of the following is an example of a chemical change?
a. cooking meat
c. dissolving sugar in iced tea
b. slicing cheese
d. freezing water
C. True-False
Classify each of these statements as always true (AT), sometimes true (ST), or never true (NT)
_____
41. Any part of a sample with uniform composition and properties is called a phase.
_____
42. A substance does not have a fixed composition.
_____
43. A heterogeneous mixture consists of two or more phases.
_____
44. A vapor is a gaseous substance that is generally a liquid at room temperature.
_____
45. A compound can be physically separated into its elements.
_____
46. In a chemical reaction, mass is neither created nor destroyed; it is conserved.
_____
47. Dissolving salt in water is a chemical change.
_____
48. Physical changes are not easily reversed.
_____
49. Elements can be separated into simpler substances by chemical reactions.
_____
50. Energy is transferred during chemical reactions.
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CHAPTER 2 PRACTICE TEST
D. Completion
Fill in the word(s) that will make each statement true.
51. During chemical and physical changes, substances
can absorb or give off __51__ .
51. ____________________________________
52. During __52__ , a liquid is boiled to produce a vapor
that is then condensed again to a liquid.
52. ____________________________________
53. Mixtures differ from substances because the
composition of a mixture can __53__ .
53. ____________________________________
54. When iron and sulfur combine to form iron sulfide,
a __54__ change takes place.
54. ____________________________________
55. A __55__ property is a quality of a substance that can
be observed or measured without changing the
composition of the substance.
55. ____________________________________
56. Elements combine chemically to form __56__ .
56. ____________________________________
57. Au is the chemical symbol for the element __57__ .
57. ____________________________________
58. A __58__ mixture has a uniform composition throughout. 58. ____________________________________
59. In any physical or chemical change, mass is __59__ .
59. ____________________________________
60. In a chemical reaction, the new substances formed
are called __60__ .
60. ____________________________________
61. A __61__ is a form of matter that flows, has a fixed
volume, and takes the shape of its container.
61. ____________________________________
62. A __62__ is a gaseous substance that is generally a liquid
or solid at room temperature.
62. ____________________________________
63. a tossed green salad is an example of a __63__ mixture.
63. ____________________________________
64. The chemical symbol for the element nitrogen is __64__.
64. ____________________________________
65. In a chemical reaction, the starting substances are
are called __65__ .
65. ____________________________________
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CHAPTER 2 PRACTICE TEST
66. Any matter that has a uniform and definite composition
is a(n) __66__ .
66. ____________________________________
E. Short Answer
67. Why won’t you find water on the Periodic Table of the Elements?
68. What is the rule for writing the symbols of elements?
69. When the elements iron (black) and sulfur (yellow) are heated in a test tube they form a substance
called fool’s gold. How would you know that fool’s gold is the product of a chemical reaction?
70. Use a particle model to explain why liquids and gases take the shape of their containers.
71. Define density, and explain why it is considered a physical property rather than a chemical
property.
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CHAPTER 2 PRACTICE TEST
F. Essay
72. Name at least one physical property of each of the following four materials that could be used to
separate it from a mixture of all four. Describe how you would separate a mixture of salt, water,
sawdust, and iron filings.
73. Distinguish between physical changes and chemical changes and give to examples of each. Then,
list three clues that are often indications of chemical changes.
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CHAPTER 2 PRACTICE TEST
Answers
A. Matching
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
I
F
G
A
B
E
H
D
K
N
O
J
K
L
M
C
B. Multiple Choice
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
D
B
B
B
B
C
D
A
D
D
A
C
D
B
C
D
C
D
D
D
A
B
B
A
C. True-Fale
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
54.
55.
56.
57.
58.
59.
60.
61.
62.
63.
64.
65.
66.
AT
NT
AT
ST (Solids like dry ice are also included)
NT
AT
NT
ST (Melting ice is; breaking glass is not)
NT
AT
Energy
Distillation
Vary
Chemical
Physical
Compounds
Gold
Homogeneous
Conserved
Products
Liquid
Vapor
Heterogeneous
N
Reactants
Substance
E. Short Answer
67. The Periodic Table of the Elements lists only elements. Water is a compound and thus will not
be found on the table.
68. The rule for writing the symbols of elements is if it is one letter, the letter is always capital. In twoletter element symbols, the first letter is capital, the second letter is lower case.
69. The physical and chemical properties of fool’s gold will be different than either element that it is
composed of. For example, fool’s gold will have a different color, luster, hardness, density,
melting point, and reactivity than either iron or sulfur.
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CHAPTER 2 PRACTICE TEST
70. The particles of a gas move independently of one another. When a gas is placed into a container,
the particles eventually move to every part of the container, and the gas takes the shape of the
container.
71. Density is the ratio of mass to volume. The density of material may be observed and measured
without changing the identity of the substance.
F.
Essay
72. Salt dissolves in water; iron filings are attracted to a magnet; sawdust floats in water. To separate
the mixture, skim the sawdust directly off the surface of the water, then expose the resulting
mixture to a magnet to remove the iron filings. Boil off the water, recapturing the water through
distillation. Solid salt remains at the bottom of the boiling flask.
73. A physical change alters a substance without changing its composition. Melting or boiling are
physical changes. In a chemical change, one or more substances change into one or more new
substances. Examples of chemical change include the rusting of iron, the reaction between iron
and sulfur to produce iron sulfide (fool’s gold), and the burning of wood. Some possible clues to
chemical changes are a transfer of energy, color change, the production of gas, and the formation
of a precipitate.
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